Cairo output device. 4 as they contain important bugfixes.

Cairo output device Unlike other devices it supports all graphics features including Cairo is a 2D graphics library with support for multiple output devices. The actual drawings are performed using a cairo context. none Antialiasing is disabled. I tried to generate the png file in R, it works fine. ) how do other people maintain pdf/a compliant files using R graphics? Types and Values enum cairo_status_t cairo_status_t is used to indicate errors that can occur when using Cairo. Length, Petal. Description Graphics devices for SVG, PDF and PostScript graphics files using the cairo graphics API. Description cairo_surface_t is the abstract type representing all different drawing targets that cairo can render to. Surface is the abstract type representing all different drawing targets that cairo can render to. pdftocairo (1): pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: * Portable Network Graphics (PNG) * JPEG Interchange Format (JPEG) * Tagged Image Apr 14, 2020 · You could use Cairo::CairoPDF() or grDevices::cairo_pdf(). 0 (Small part of) Command output: cairo/device. man pdftocairo (1): pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: 1. Apr 14, 2007 · Cairo is a vector graphics library with cross-device output support. Currently supported output targets include the X Window System (via both Xlib and XCB), quartz, win32, and image buffers, as well as PDF Cairo is a 2-D graphics library with support for multiple output devices. It'd be great to have knitr use type = "cairo" when knitting, but replicating this dpi = 300, type = "cairo" in R Markdown, however, is more difficult. If you want to access a device directly that you used to draw to with Cairo, you must first call cairo_device_flush () to ensure that Cairo finishes all operations on the device and resets it to a clean state. for type = "Xlib" only, additional arguments to the underlying X11 device such as fonts or family. Cairo is a graphics device for R which uses the cairo graphics library to provide high-quality output in various formats including bitmap (PNG, JPEG, TIFF), vector (PDF, PostScript, SVG) and on-screen (X11, Windows). Description Cairo initializes a new graphics device that uses the cairo graphics library for rendering. The current implementation produces high-quality PNG, JPEG, TIFF bitmap files, high resolution PDF files with embedded fonts, SVG graphics and PostScript files. gz (104. Summary: New "cairo" output device pulls X dependency into main executable/library Cairo 2D Graphics Library Cairo is a 2D graphics library with support for multiple output devices. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: Portable Network Graphics (PNG) Set the cairo antialias option used for text and drawing in image files (or rasterized regions in vector output). - RForge. Sep 23, 2023 · Cairo is a 2D graphics library with support for multiple output devices. When the output format is a vector format (PDF, PS, EPS, and SVG) or when -singlefile is used, output-file is the full filename. It is ideal for use in server environments (file output) and as a replacement for other devices that don't have Cairo's capabilities such as alpha support or anti-aliasing. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: Portable Network Graphics (PNG) Creates a output device for emitting the script, used when creating the individual surfaces. answered Jan 20, 2021 Sep 2, 2017 · You can specify the Cairo device in ggsave() to use it, which is easier than dealing with GhostScript: ggsave(p, filename = "whatever. It also provides X11 and Windows interactive graphics devices. The image formats (PNG and JPEG) generate one file per page with the page number and file type appended to output-file (except when -singlefile is used). As you might gather, both of these functions use cairo graphics. I also like to use the handy ggsave() function to do so, as it streamlines the process, and makes it easy to be consistent across formats. … to PNG/JPEG/TIFF/PDF/PS/EPS/SVG using cairo. (Very few SVG viewers are capable of displaying multi-page SVG files. Experimental backends include OpenGL, BeOS, OS/2, and DirectFB. 2023), and tikz is a device in the tikzDevice package (Sharpsteen and Bracken 2023). Total 5 files, 509,915 bytes. CAIRO_STATUS_LAST_STATUS } cairo_status_t; cairo_status_t is used to indicate errors that can occur when using Cairo. The image buffer can be saved to a file or the data can be provided to some other graphics system that does not have a native backend. If missing, inferred from extension of the filename argument. is it possible to do pixel-level, non-antialiased clipping with cairo, even if it is in a device-dependent way? I am using the xlib backend and i want to be able to redraw a certain part of a cairo-drawn widget, as for example when responding to an expose event. new() : cairo error 'error while writing to output stream' I'm using R 3. If the PDF-file is “-” , the PDF is read from stdin. Repository contents: Source package: Cairo_1. Cairo is designed to produce identical output on all output media while taking advantage of display hardware acceleration when available (eg. Devices class Device () class cairo. That’s why I was wondering if anyone had a recipe for an R source build I could try that has a working graphics component with RStudio Server. The actual drawings are performed using a Context. 0 can be used. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: Portable Network Graphics (PNG) Nov 5, 2025 · The Cairo. Description: The following description of Cairo is taken from the Cairo web page Cairo is a 2D graphics library with support for multiple output devices. If the PDF-file is "-" , the PDF is read from stdin. If the output-file is “-” , the output file will be written to stdout. New entries may be added in future versions. subpixel Surfaces class Surface () class cairo. This chapter looks at this backend binding. R can be compiled without support for any of these devices: this will be reported if you attempt to use them on a system where they are not supported. Cairo is a powerful 2d graphics library. Is it possible to do so? thanks in advance, xavi Cairo is a vector graphics library with cross-device output support. Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System and in-memory image buffers. It uses R's standard PNG device, but with Cairo support turned on. I have had better luck with the Cairo package Cairo::Cairo device, though it isn't as good printing math symbols (subscripts seem to get messed up on my system). So basically, if you want a 90x150 figure at 300 dpi, you have to divide by 3 this dimensions (since 300 dpi is 3x the default resolution, 100dpi). 3. When saving PDFs, for instance, the cairo_pdf device correctly embeds custom fonts. (I noted before that all pdf files including R Cairo graphics thus lose their own pdf/a compliance. Oct 15, 2016 · Error in plot. 2 or possibly 1. This device supports alpha Description The PDF surface is used to render cairo graphics to Adobe PDF files and is a multi-page vector surface backend. R Graphics Device using Cairo Graphics Library for Creating High-Quality Bitmap (PNG, JPEG, TIFF), Vector (PDF, SVG, PostScript) and Display (X11 and Win32) Output One of screen, pdf, ps, svg, or png, indicating the cairo backend to use (the output format). Unlike other devices it supports all graphics features including alpha blending Sep 27, 2017 · The Cairo graphics library makes it easy to embed custom fonts in PDFs and create high resolution PNGs (with either AGG or Cairo). This document introduces you to how cairo works and many of the functions you will use to create the graphic experience you desire. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: Portable Network Graphics (PNG) Description Cairo initializes a new graphics device that uses the cairo graphics library for rendering. These R functions use the Cairo API. The actual drawing is done via cairo, a 2D graphics library, and pango, a library for laying out and rendering text. The backends currently present in cairo include: image: Targets an in-memory image buffer. For types "cairo" and "quartz", the family argument can be supplied. regular is 1, bold is 2, italic is 3, etc. Length, data= Aug 1, 2018 · I followed your suggestions in the above post and still got bad luck (same error, cannot start device PNG). c:30:10: fatal error: Python. but when using cairo_t, the last error, if any, is stored in the context and can be retrieved with cairo_status(). Jan 29, 2024 · pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: For the vector outputs, regions of the page that can not be represented natively in the output format (eg translucency in PS) will be rasterized at the resolution specified by the resolution options. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: • Sep 23, 2020 · Re: Cairo, that’s the conclusion I came to as well. Cairo is designed to produce consistent output on all output media while taking advantage of display hardware acceleration when available (for example, through the X Render Extension). Using the cairo_pdf graphics Cairo - Graphics device using cairographics library for creating bitmap images or output. ) Although this only requires cairo >= 1. through the X Render Extension). Files are created without the dependence on X11 or other external programs. Cairo (stylized as cairo) is an open-source graphics library that provides a vector graphics -based, device-independent API for software developers. However, at times it is n Apr 14, 2023 · In this case, I wonder if R now has an output device that produces pdf/a compliant graphics. Surface is created by using backend-specific constructors of the form cairo. pdf", device = cairo_pdf, This device supports alpha channel (semi-transparent drawing) and result-ing images can contain transparent and semi-transparent regions. It supports alpha-blending (semi-transparent painting), anti-aliasing and font embedding. It provides primitives for two-dimensional drawing across a number of different backends. See the ‘Cairo fonts’ section in the help for X11. 2. What’s not clear from the documentation is how the functions differ (but we’ll see differences later). Getting consistent fonts across platforms often failed, and for the default PNG device under Windows, anti-aliasing was also an issue. h: No such file or directory #include <Python. g. 3-2 2007-04-18 pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: • Cairo is a 2D graphics library with support for multiple output devices. However, it is strongly encouraged to use cairo 1. It is ideal for use in server envi-ronments (file output) and as a replacement for other devices that don't have Cairo's capabili-ties such as alpha support or anti-aliasing. 12 This device supports alpha channel (semi-transparent drawing) and result-ing images can contain transparent and semi-transparent regions. Feb 2, 2022 · I have the same issue with the lackluster kerning from cairo_pdf. This device supports alpha channel (semi-transparent drawing) and resulting images can contain transparent and semi-transparent regions. Backends Cairo has several different backends, providing support for a variety of output devices. 1 and Rstudio on windows 10, I've also try to run the code with R 2. Note that the capabilities depend both on the libraries available in the system as well as the compiled-in modules in cairo graphics. copied from cf-staging / cairo Conda Files Labels Badges Creates a output device for emitting the script, used when creating the individual surfaces. Cairo is designed to produce consistent output on all output media while taking Cairo - Graphics device using cairographics library for creating bitmap images or output. Consequently, in my individual assignment I planned the workflow to be: Output device i've used: Speaker jack: It's was my best option to make a voices output where it's make me capable to use any type of speaker, Handfree or any other wired sound output device (but handfree was the best in quality) Creates a output device for emitting the script, used when creating the individual surfaces. tar. Mar 25, 2024 · I ran this program in Rstudio and was prompted with cairo error "Error writing output stream". Cairo is designed to produce consistent output on all output media while taking advantage of display hardware acceleration when available (eg. 7-0) R Graphics Device using Cairo Graphics Library for Creating High-Quality Bitmap (PNG, JPEG, TIFF), Vector (PDF, SVG, PostScript) and Display (X11 and Win32) Output Description R graphics device using cairographics library that can be used to create high-quality vector (PDF, PostScript and SVG) and bitmap output (PNG,JPEG,TIFF), and high-quality rendering in displays (X11 There are many advantages to using Cairo to save R graphics (see here, for example). Surface is the abstract base class from which all the other surface classes derive. In some cases it is returned directly by functions. Surface cairo. 5kb, updated: Sun Nov 9 21:53:45 2025) R 2. The options are: default Use the default antialiasing for the target device. Jan 14, 2010 · 1 Cairo is a 2D graphics library with support for multiple output devices. Device A Device represents the driver interface for drawing operations to a Surface. 4 (in Centos/RHEL 5) is incorrect. 6. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: Portable Network Graphics (PNG) Oct 7, 2012 · How can I use Unicode characters for labels, titles and similar things in a PDF plot created with ggplot2? Consider the following example: library (ggplot2) qplot (Sepal. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device of the poppler PDF library, to any of the following output formats: When valgrind's memcheck analyzes a cairo-using program without a call to cairo_debug_reset_static_data, it will report all data reachable via cairo's static objects as "still reachable". Oct 25, 2025 · Set the cairo antialias option used for text and drawing in image files (or rasterized regions in vector output). 15, MacOS X Leopard binary An important function that devices fulfill is sharing access to the rendering system between Cairo and your application. The output produced by cairo_ps(onefile = FALSE) will be encapsulated postscript on a platform with cairo >= 1. Nov 5, 2025 · This function sets the fonts for Cairo graphics devices globally; previously opened Cairo graphics devices will also use these fonts. o fix page numbering to start at 1 (was 0) and update documentation correspondingly 1. 2, the output produced by cairo 1. It is designed to produce identical output on all output media while taking advantage of display hardware acceleration when available (e. Nov 7, 2017 · CAIRO Name: CAIRO Type: Output Device Command Purpose: Direct graphical output to a CAIRO device. 4 as they contain important bugfixes. This is a message indicating an error： Zcp: sample number is 14 page that can not be represented natively in the output format (eg translucency in PS) will be rasterized at the resolution specified by the resolution options. It cannot Apr 25, 2020 · BTW, this all began from trying to render harfbuzz output in glfw, and there is no usable document, so I am trying to do the work using pango which works with harfbuzz and cairo. Nov 5, 2025 · This device supports alpha channel (semi-transparent drawing) and resulting images can contain transparent and semi-transparent regions. If you want to use devices from an add-on package, you have to install the package first. Creates a output device for emitting the script, used when creating the individual surfaces. Currently supported output targets include the X Window System (via both Xlib and XCB), Quartz, Win32, image buffers, PostScript, PDF, and SVG file output. e. When valgrind's memcheck analyzes a cairo-using program without a call to cairo_debug_reset_static_data(), it will report all data reachable via cairo's static objects as "still reachable". Unlike other devices it supports all graphics features including Oct 12, 2012 · Whenever possible, I try to save R graphic output in a vector format, typically pdf(). A cairo. <XXX>Surface (). Nov 5, 2025 · Create a new Cairo-based graphics device Description Cairo initializes a new graphics device that uses the cairo graphics library for rendering. 3-3 2007-04-25 o improve detection of cairo and its dependencies o work around missing API such that cairo 1. Cairo is a vector graphics library with cross-device output support. net This device supports alpha channel (semi-transparent drawing) and result-ing images can contain transparent and semi-transparent regions. Currently supported output targets include the X Window System (via both Xlib and XCB), quartz, win32, and image buffers, as well as PDF, PostScript, and SVG file output. The argument names correspond to the five values of the graphical parameter 'font', i. This device supports alpha channel (semi-transparent drawing) and result-ing images can contain transparent and semi-transparent regions. 15. The pdfcairo terminal device generates output in pdf. . Oct 17, 2019 · One of them was pygobject. Cairo provides a pdftocairo (1) man page. Your setup then will be 30x50. subpixel The CairoXXX devices are from the add-on R package Cairo (Urbanek and Horner 2023), the svglite device is from the svglite package (Wickham et al. 7-1. Since 1. The conclusion of the post was to use grDevices::cairo_pdf() for saving Apr 5, 2025 · This device supports alpha channel (semi-transparent drawing) and resulting images can contain transparent and semi-transparent regions. pdftocairo converts Portable Document Format (PDF) files, using the cairo output device … Contribute to lambdafu/poppler development by creating an account on GitHub. This is the default setting if -antialias is not used. ReferenceContents Jan 20, 2021 · Just figured out that Cairo () and ggsave () size output is affected by the image resolution, even if you choose a "metric" dimension as output. EGL is one of the backends for Cairo graphics, and this means that it can draw to Wayland surfaces. Set the cairo antialias option used for text and drawing in image files (or rasterized regions in vector output). through the X Render This device supports alpha channel (semi-transparent drawing) and result-ing images can contain transparent and semi-transparent regions. Note that unlike postscript and pdf, cairo_pdf and cairo_ps sometimes record bitmaps and not vector graphics: a resolution of 72dpi is used. The cairo API provides operations similar to the drawing operators of PostScript and PDF. Using stdout is not valid with image formats unless -singlefile is used. gray Perform single-color antialiasing using shades of gray. R graphics device using cairographics library that can be used to create high-quality vector (PDF, PostScript and SVG) and bitmap output (PNG,JPEG,TIFF), and high-quality rendering in displays (X11 and Win32). capabilities function returns a logical vector showing which capabilities are supported in this particular Cairo build. The Cairo library includes devices like Cairo::CairoPNG (), but ggsave (, type = "cairo") doesn't use this device. Cairo Cairo is a graphics device for R which uses the cairo graphics library to provide high-quality output in various formats including bitmap (PNG, JPEG, TIFF), vector (PDF, PostScript, SVG) and on-screen (X11, Windows). net This device supports alpha channel (semi-transparent drawing) and resulting images can contain transparent and semi-transparent regions. h> Proposed solution: Make sure that you have installed Python development packages for your operating system. 34. Here are the most important details: Executed command: pip install -U pygobject==3. PostScript and PDF file output is planned. Cairo (version 1. Operations in cairo include stroking and filling Cairo initializes a new graphics device that uses the cairo graphics library for rendering. Since it uses the same back-end for all output, copying across formats is WYSIWYG. Cairo is designed to produce consistent output on all output media while taking advantage of display hardware acceleration when available (e Apr 15, 2020 · In our recent post about saving R graphics, it became obvious that achieving consistent graphics across platforms or even saving the “correct” graph on a particular OS was challenging. lvhl rpxz hvgel esepty zywqo zpwcd nagssfc czsp kln cgsd dmgs ouyandj iruzm eijvblc qym